7068308857 has 4 divisors (see below), whose sum is σ = 7240706676. Its totient is φ = 6895911040.

The previous prime is 7068308851. The next prime is 7068308867. The reversal of 7068308857 is 7588038607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7588038607 = 19 ⋅399370453.

It can be written as a sum of positive squares in 2 ways, for example, as 1184805241 + 5883503616 = 34421^2 + 76704^2 .

It is a cyclic number.

It is not a de Polignac number, because 7068308857 - 2³¹ = 4920825209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7068308851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86198848 + ... + 86198929.

It is an arithmetic number, because the mean of its divisors is an integer number (1810176669).

Almost surely, 2^7068308857 is an apocalyptic number.

It is an amenable number.

7068308857 is a deficient number, since it is larger than the sum of its proper divisors (172397819).

7068308857 is a wasteful number, since it uses less digits than its factorization.

7068308857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172397818.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The square root of 7068308857 is about 84073.2350810887. The cubic root of 7068308857 is about 1919.1334393364.

The spelling of 7068308857 in words is "seven billion, sixty-eight million, three hundred eight thousand, eight hundred fifty-seven".